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1.
BMC Infect Dis ; 24(1): 182, 2024 Feb 12.
Artigo em Inglês | MEDLINE | ID: mdl-38342922

RESUMO

BACKGROUND: The human papillomavirus (HPV) infection may affect the miRNA expression pattern during cervical cancer (CC) development. To demonstrate the association between high-risk HPVs and the development of cervix dysplasia, we examined the expression patterns of hsa-miR-194-5p and hsa-miR-195-5p in Pap smear samples from southeast Iranian women. We compared samples that were HPV-positive but showed no abnormality in the cytological examination to samples that were HPV-positive and had severe dysplasia. METHODS: Pap smear samples were obtained from 60 HPV-positive (HPV-16/18) patients with histologically confirmed severe dysplasia (cervical intra-epithelial neoplasia (CIN 3) or carcinoma in situ) and the normal cytology group. The expression of hsa-miR-194-5p and hsa-miR-195-5p was analyzed by real-time quantitative PCR, using specific stem-loop primers and U6 snRNA as the internal reference gene. Clinicopathological features were associated with miRNA expression levels. Furthermore, functional enrichment analysis was conducted using in silico tools. The Kaplan-Meier survival method was also obtained to discriminate survival-significant candidate miRNAs in CC, and receiver operating characteristic (ROC) curves were constructed to assess the diagnostic value. RESULTS: Compared to HPV-positive cytologically normal Pap smear samples, hsa-miR-194-5p and hsa-miR-195-5p relative expression decreased significantly in HPV-positive patients with a severe dysplasia Pap smear. Kaplan-Meier analysis indicated a significant association between the miR-194 decrease and poor CC survival. In essence, ROC curve analysis showed that miR-194-5p and miR-195-5p could serve as valuable markers for the development of cervix dysplasia in individuals who are positive for high-risk HPVs. CONCLUSIONS: This study revealed that hsa-miR-194-5p and hsa-miR-195-5p may possess tumor suppressor capabilities in the context of cervical dysplasia progression. However, it remains uncertain whether these microRNAs are implicated in the transition of patients with high dysplasia to cervical cancer. We also showed the potential capability of candidate miRNAs as novel diagnostic biomarkers related to cervical dysplasia progression.


Assuntos
MicroRNAs , Infecções por Papillomavirus , Displasia do Colo do Útero , Neoplasias do Colo do Útero , Humanos , Feminino , Neoplasias do Colo do Útero/diagnóstico , Teste de Papanicolaou , Papillomavirus Humano 16/genética , Citologia , Irã (Geográfico) , Papillomavirus Humano 18/genética , MicroRNAs/genética
2.
Am J Physiol Cell Physiol ; 324(5): C1141-C1157, 2023 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-36689672

RESUMO

Duchenne muscular dystrophy (DMD) is associated with distinct mitochondrial stress responses. Here, we aimed to determine whether the prospective mitochondrial-enhancing compound Olesoxime, prevents early-stage mitochondrial stress in limb and respiratory muscle from D2.mdx mice using a proof-of-concept short-term regimen spanning 10-28 days of age. As mitochondrial-cytoplasmic energy transfer occurs via ATP- or phosphocreatine-dependent phosphate shuttling, we assessed bioenergetics with or without creatine in vitro. We observed that disruptions in Complex I-supported respiration and mH2O2 emission in D2.mdx quadriceps and diaphragm were amplified by creatine demonstrating mitochondrial creatine insensitivity manifests ubiquitously and early in this model. Olesoxime selectively rescued or maintained creatine sensitivity in both muscles, independent of the abundance of respiration-related mitochondrial proteins or mitochondrial creatine kinase cysteine oxidation in quadriceps. Mitochondrial calcium retention capacity and glutathione were altered in a muscle-specific manner in D2.mdx but were generally unchanged by Olesoxime. Treatment reduced serum creatine kinase (muscle damage) and preserved cage hang-time, microCT-based volumes of lean compartments including whole body, hindlimb and bone, recovery of diaphragm force after fatigue, and cross-sectional area of diaphragm type IIX fiber, but reduced type I fibers in quadriceps. Grip strength, voluntary wheel-running and fibrosis were unaltered by Olesoxime. In summary, locomotor and respiratory muscle mitochondrial creatine sensitivities are lost during early stages in D2.mdx mice but are preserved by short-term treatment with Olesoxime in association with specific indices of muscle quality suggesting early myopathy in this model is at least partially attributed to mitochondrial stress.


Assuntos
Distrofia Muscular de Duchenne , Animais , Camundongos , Distrofia Muscular de Duchenne/metabolismo , Camundongos Endogâmicos mdx , Creatina/metabolismo , Camundongos Endogâmicos C57BL , Estudos Prospectivos , Diafragma/metabolismo , Músculo Esquelético , Modelos Animais de Doenças
3.
Toxicol Ind Health ; 39(2): 115-126, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36650049

RESUMO

The fungicide mancozeb increases oxygen-free radicals in the central nervous system. As an antioxidant, L-carnitine protects DNA and cell membranes from damage caused by oxygen-free radicals. The present study investigated how L-carnitine affected the acoustic startle response (ASR) in rats exposed to mancozeb. In this experimental study, male Wistar rats were gavaged orally with mancozeb (500, 1000, and 2000 mg/kg), L-carnitine (100, 200, and 400 mg/kg), or L-carnitine (200 mg/kg) + mancozeb (500 mg/kg) three times in 1 week. In the sham group, saline (0.9%, 10 mL/kg) was gavaged at a volume equivalent to that of the drugs. The control group did not receive any treatment. The results showed that locomotor activity and the percentage of prepulse inhibition in the mancozeb groups decreased compared to the sham group while these parameters increased in the L-carnitine group (200 mg/kg) compared to sham rats. In conclusion, mancozeb may increase the risk factor for cognitive diseases such as schizophrenia in people exposed to it while pretreatment with L-carnitine can attenuate the toxic effect.


Assuntos
Maneb , Reflexo de Sobressalto , Ratos , Animais , Masculino , Reflexo de Sobressalto/fisiologia , Ratos Wistar , Carnitina/farmacologia , Maneb/toxicidade
4.
BMC Cardiovasc Disord ; 22(1): 116, 2022 03 19.
Artigo em Inglês | MEDLINE | ID: mdl-35305551

RESUMO

BACKGROUND: One of the global problems is to control the coronavirus epidemic, and the role of different medicines is still unknown to policymakers. This study was conducted to evaluate the effects of losartan on the mortality rate of COVID-19 in hypertensive patients. METHODS: The research sample of analytical study included 1458 patients presenting to COVID-19 diagnostic centers in Yazd that were examined in the first six months of 2020. Data were analyzed using descriptive statistics as well as chi-square, Fisher's exact test, t test, and logistic regression. RESULTS: Of 1458 subjects that were studied, 280 were hypertensive of whom 179 tested positive for SARS-CoV-2 PCR. The results showed a lower chance of death by more than 5 times in hypertensive patients who used losartan (P = 0.003). Moreover, regarding the effect of losartan on the prevention of COVID-19 in hypertensive patients, it was found that this medicine played a protective role although this relationship was not statistically significant (P = 0.86). CONCLUSIONS: The results showed that losartan reduced the chance of mortality in hypertensive patients. It is recommended that the effect of losartan and other blood pressure medicines on COVID-19 patients be investigated in larger studies as well as laboratory investigations.


Assuntos
COVID-19 , Hipertensão , Anti-Hipertensivos/uso terapêutico , Humanos , Hipertensão/diagnóstico , Hipertensão/tratamento farmacológico , Hipertensão/epidemiologia , Losartan/uso terapêutico , SARS-CoV-2
5.
BMC Nephrol ; 23(1): 203, 2022 06 09.
Artigo em Inglês | MEDLINE | ID: mdl-35681145

RESUMO

BACKGROUND: Chronic kidney disease (CKD) is one of the major global causes of mortality, described as the most neglected chronic disease. This study aimed to determine the prevalence and determinants of CKD in the setting of the Shahedieh cohort study in Yazd, Iran. METHODS: This cross-sectional study was conducted on adults in the baseline phase of the Shahedieh cohort study in Yazd, Iran. In this study, 9781 participants aged 30-73-year-old were investigated. The data used in this study included demographic and clinical variables and blood samples. Adjusted odds ratios were employed using multivariate logistic regression; meanwhile, population attributable risks for CKD were calculated and reported. RESULTS: CKD prevalence was 27.5% (95%CI: 26.57-28.34) in all participants, 24% in male, and 30.3% in female. The results of multivariate logistic regression analysis identified age (OR = 1.89, 95%CI:1.082-1.96), women (OR = 1.62, 95%CI: 1.45-1.79), BMI ≥ 30 (OR = 1.40,95%CI: 1.20-1.62), diabetes (OR = 1.38, 95%CI: 1.22-1.57), hypertriglyceridemia(OR = 1.20, 95%CI: 1.01-1.43), history of cardiovascular disease (OR = 1.20, 95%CI: 1.01-1.43), hypertension (OR = 1.18, 95%CI: 1.04-1.33), smoking (OR = 1.17, 95% CI: 1.02-1.33), LDL ≥ 130 (OR = 1.15, 95%CI: 1.01-1.31), history of kidney stone (OR = 1.14, 95%CI: 1.01-1.32) and hypercholesterolemia (OR = 1.14, 95%CI: 1.01-1.32) as risk factors for CKD. Among individual factors, obesity (11.25%), Hypertriglyceridemia (9.21%), LDL ≥ 130 (7.12%) had the greatest Population-Attributable Fraction, followed by Hypercholesterolemia (5.2%), diabetes (5.05%), smoking (3.73%) and high blood pressure (2.82%). CONCLUSION: The results showed that the main determinants of CKD are potentially modifiable risk factors. Therefore, implementing early detection and screening programs in people at risk as well as preventive measures such as lifestyle modification programs and risk factors controlling can prevent the disease.


Assuntos
Diabetes Mellitus , Hipercolesterolemia , Hipertensão , Hipertrigliceridemia , Insuficiência Renal Crônica , Adulto , Idoso , Estudos de Coortes , Estudos Transversais , Diabetes Mellitus/epidemiologia , Feminino , Humanos , Hipertensão/epidemiologia , Irã (Geográfico)/epidemiologia , Masculino , Pessoa de Meia-Idade , Prevalência , Insuficiência Renal Crônica/diagnóstico , Fatores de Risco
6.
BMC Public Health ; 22(1): 1401, 2022 07 22.
Artigo em Inglês | MEDLINE | ID: mdl-35864469

RESUMO

BACKGROUND: Elevated blood pressure is associated with cardiovascular disease, stroke and chronic kidney disease. In this study, we examined the socioeconomic inequality and its related factors in prevalence, Awareness, Treatment and Control (ATC) of hypertension (HTN) in Iran. METHOD: The study used data from the recruitment phase of The Prospective Epidemiological Research Studies in IrAN (PERSIAN). A sample of 162,842 adults aged > = 35 years was analyzed. HTN was defined according to the Joint National Committee)JNC-7(. socioeconomic inequality was measured using concentration index (Cn) and curve. RESULTS: The mean age of participants was 49.38(SD = ± 9.14) years and 44.74% of the them were men. The prevalence of HTN in the total population was 22.3%(95% CI: 20.6%; 24.1%), and 18.8%(95% CI: 16.8%; 20.9%) and 25.2%(95% CI: 24.2%; 27.7%) in men and women, respectively. The percentage of awareness treatment and control among individuals with HTN were 77.5%(95% CI: 73.3%; 81.8%), 82.2%(95% CI: 70.2%; 81.6%) and 75.9%(95% CI: 70.2%; 81.6%), respectively. The Cn for prevalence of HTN was -0.084. Two factors, age (58.46%) and wealth (32.40%), contributed most to the socioeconomic inequality in the prevalence of HTN. CONCLUSION: The prevalence of HTN was higher among low-SES individuals, who also showed higher levels of awareness. However, treatment and control of HTN were more concentrated among those who had higher levels of SES, indicating that people at a higher risk of adverse event related to HTN (the low SES individuals) are not benefiting from the advantage of treatment and control of HTN. Such a gap between diagnosis (prevalence) and control (treatment and control) of HTN needs to be addressed by public health policymakers.


Assuntos
Hipertensão , Adulto , Estudos de Coortes , Feminino , Humanos , Hipertensão/diagnóstico , Hipertensão/epidemiologia , Hipertensão/terapia , Irã (Geográfico)/epidemiologia , Masculino , Pessoa de Meia-Idade , Prevalência , Estudos Prospectivos , Fatores de Risco , Fatores Socioeconômicos
7.
BMC Neurol ; 21(1): 415, 2021 Oct 27.
Artigo em Inglês | MEDLINE | ID: mdl-34706649

RESUMO

BACKGROUND: Patients with multiple sclerosis face numerous problems during their lifetime. A self-report measurement of disease - specific problems is required to be developed for patients with multiple sclerosis based on different cultural factors. Accordingly, this can advance our understanding on the disease-specific problems for care planning as well as improving coping ways and quality of life. This study aimed to develop and validate the scale of disease-specific problems of Multiple Sclerosis. METHODS: This was an exploratory sequential mixed method study conducted in three phases. Correspondingly, in the first phase, the concept of disease-specific problems was defined using the content analysis approach in patients with MS. In the second phase, the item pool was generated from the findings of the first phase, and in the third phase, psychometric properties of the scale, including face, content, and construct validity and reliability, were evaluated. RESULTS: After examining both validity and reliability, 28 items were developed in the final questionnaire. As well, by performing the factor analysis, five factors were revealed as follows: physical problems, psychological problems, emotional problems, family problems, and socio-economic problems. Internal consistency and stability of the questionnaire were calculated as 0.82 and 0.90, respectively, indicating an excellent reliability. CONCLUSION: The 28-item questionnaire is valid and reliable for measurement of level of disease - specific problems in Iranian people with MS.


Assuntos
Esclerose Múltipla , Humanos , Irã (Geográfico) , Esclerose Múltipla/diagnóstico , Psicometria , Qualidade de Vida , Reprodutibilidade dos Testes , Inquéritos e Questionários
8.
BMC Public Health ; 20(1): 667, 2020 May 12.
Artigo em Inglês | MEDLINE | ID: mdl-32397990

RESUMO

BACKGROUND: Hypertension, known as the silent killer, is a major risk factor for cardiovascular disease. Awareness and treatment of hypertension is not appropriate in the world, and this has led to an increase in mortality and morbidity caused by uncontrolled hypertension. This study aims to estimate awareness, treated, and controlled hypertensive and relevant predictors in an adult Iranian population. METHODS: This cross-sectional study was conducted on 10,000 adults aged 20-69 years in Yazd, Iran. They were selected through multi-stage random cluster sampling in 2015-2016. Blood pressure was measured three-time with standard protocol by trained health workers. Those with a positive history of hypertension and using anti-hypertensive drugs, prescribed by a physician, were considered hypertensive. Hypertension was defined as systolic blood pressure ≥ 140 mmHg and/or diastolic BP of ≥90 mmHg. Uncontrolled hypertension was defined in accordance with recommended treatment targets by the Joint National Committee (JNC7). Logistic regression was used to assess the predictors of hypertension awareness, treatment and control. RESULTS: The prevalence of hypertension was 37.3%, and the prevalence of pre-hypertension was 46.4%. 49.7% of People with hypertension were aware of their disease, and 71.5% of them were using antihypertensive drugs prescribed by physicians. Blood pressure was controlled in 38.9% of the treated patients. In the adjusted model, older age, female sex, and history of diabetes mellitus were positively associated with higher awareness. High physical activity, tobacco smoking, and diabetes are the only predictors of treated high blood pressure. Younger age, female sex, and higher education were determinants of controlled hypertension. Having health insurance was significantly correlated with awareness and control of hypertension. CONCLUSION: Hypertension is a public health problem in this population, which is not well controlled. Half of the patients were unaware. Intervention for increased screening coverage is needed. It should plan to raise public awareness about hypertension and improve hypertension control under the supervision of physicians. Implement a family physician program is recommended in the health system.


Assuntos
Anti-Hipertensivos/uso terapêutico , Pressão Sanguínea/efeitos dos fármacos , Conhecimentos, Atitudes e Prática em Saúde , Hipertensão/diagnóstico , Hipertensão/tratamento farmacológico , Adulto , Idoso , Estudos Transversais , Feminino , Humanos , Hipertensão/epidemiologia , Irã (Geográfico)/epidemiologia , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Prevalência , Fatores de Risco , Adulto Jovem
9.
Nurs Ethics ; 27(2): 461-469, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-31284820

RESUMO

BACKGROUND: Ethics development is one of the most important aspects of professional practice in health sciences students. Understanding factors affecting ethics development can enhance clinical and professional performance in students. OBJECTIVE: This study was conducted to explore students' perceptions about factors affecting professional ethics development. RESEARCH DESIGN: This study is a conventional content analysis. Data were collected through 20 semi-structured interviews and two focus group interviews (12 students) during 2017-2018. Data were analyzed concurrently with data gathering, using the conventional content analysis approach of Graneheim and Lundman. PARTICIPANTS AND RESEARCH CONTEXT: In total, 8 students of nursing, 5 medical students, 4 students of anesthesia and 3 operating room students in individual interviews, and 12 students in two focus group interviews from one university in the south of Iran were selected through purposive sampling. ETHICAL CONSIDERATIONS: The research was approved by the Ethics Committee of one university in the south of Iran. FINDINGS: The findings revealed two themes: personal and background factors. Personal factors consisted of the two categories of individual motivation and tendencies and interpersonal interactions. Background factors consisted of the two categories of role and function of teachers and environmental agents. DISCUSSION AND CONCLUSIONS: According to the findings, both background and individual factors affect development of professional ethics in students. Understanding these factors along with reinforcement of educational planning in this field can improve healthcare services.


Assuntos
Ética Profissional , Estudantes de Enfermagem/psicologia , Adulto , Feminino , Grupos Focais/métodos , Humanos , Irã (Geográfico) , Masculino , Pessoa de Meia-Idade , Pesquisa Qualitativa , Estudantes de Enfermagem/estatística & dados numéricos
10.
Int Q Community Health Educ ; 41(1): 15-23, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31876257

RESUMO

Globally, high-risk illnesses including Hepatitis B, Hepatitis C, and human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS) are major health problems causing considerable impact on health systems. Knowledge and awareness are very important factors for controlling these illnesses in society. Regarding the transmission routes of these viruses, young people are at the highest risk of infection. Therefore, our objectives were to determine the college students' awareness of hepatitis B virus (HBV), hepatitis C virus (HCV), and HIV/AIDS with regard to basic information, transmission, and prevention. A total of 810 students from 7 universities, from September to March 2017, were included in the study. All participants were categorized into three groups (medical, biology, and other fields). The subjects were evaluated by a standardized questionnaire and results analyzed in SPSS software using the χ2 test. In total, 43% of respondents were male and the majority of them were 20 to 25 years old. Our results showed the suitable level of awareness about HBV and remarkable about HIV. In contrast, insufficient level of awareness was indicated about HCV. Given the low levels of awareness or knowledge about HCV, it can be suggested that educational programs for this important disease are necessary especially for university students. On the other hand, high awareness of participants about HBV and HIV/AIDS might be the results of the proper functioning of educational programs for students in Iran.


Assuntos
Infecções por HIV/transmissão , Conhecimentos, Atitudes e Prática em Saúde , Hepatite B/transmissão , Hepatite C/transmissão , Estudantes/psicologia , Síndrome da Imunodeficiência Adquirida/epidemiologia , Síndrome da Imunodeficiência Adquirida/prevenção & controle , Síndrome da Imunodeficiência Adquirida/transmissão , Adolescente , Adulto , Estudos Transversais , Feminino , Infecções por HIV/epidemiologia , Infecções por HIV/prevenção & controle , Hepatite B/epidemiologia , Hepatite B/prevenção & controle , Hepatite C/epidemiologia , Hepatite C/prevenção & controle , Humanos , Irã (Geográfico) , Masculino , Universidades , Adulto Jovem
11.
Am J Physiol Cell Physiol ; 317(6): C1324-C1329, 2019 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-31618075

RESUMO

Fatty acid stress can have divergent effects in various cancers. We explored how metabolic and redox flexibility in HepG2 hepatocarcinoma cells mediates protection from palmitoylcarnitine. HepG2 cells, along with HCT 116 and HT29 colorectal cancer cells were incubated with 100 µM palmitoylcarnitine for up to 48 h. Mitochondrial H2O2 emission, glutathione, and cell survival were assessed in HT29 and HepG2 cells. 100 µM palmitoylcarnitine promoted early growth in HepG2 cells by ~8% after 48 h versus decreased cell survival observed in HT29 and HCT 116 cells. Palmitoylcarnitine increased mitochondrial respiration at physiological and maximal concentrations of ADP, while lowering cellular lactate content in HepG2 cells, suggesting a switch to mitochondrial metabolism. HepG2 cell growth was associated with an early increase in H2O2 emission by 10 min, followed by a decrease in H2O2 at 24 h that corresponded with increased glutathione content, suggesting a redox-based compensatory mechanism. In contrast, abrogation of HT29 cell proliferation was related to decreased mitochondrial respiration (likely due to cell death) and decreased glutathione. Concurrent glutathione depletion with BSO prevented palmitoylcarnitine-induced growth in HepG2 cells, indicating that glutathione was critical for promoting growth following palmitoylcarnitine. Inhibiting UCP2 with genipin sensitized HepG2 cells to palmitoylcarnitine, suggesting that activation of UCP2 may be a 2nd redox-based mechanism conferring protection. These findings suggest that HepG2 cells possess inherent metabolic and redox flexibility relative to HT29 cells that confers protection from palmitoylcarnitine-induced stress via adaptive increases in mitochondrial respiratory control, glutathione buffering, and induction of UCP2.


Assuntos
Butionina Sulfoximina/farmacologia , Glutationa/antagonistas & inibidores , Peróxido de Hidrogênio/metabolismo , Mitocôndrias/efeitos dos fármacos , Palmitoilcarnitina/farmacologia , Proteína Desacopladora 2/genética , Apoptose/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Sobrevivência Celular/genética , Regulação da Expressão Gênica/efeitos dos fármacos , Glutationa/metabolismo , Células HCT116 , Células HT29 , Células Hep G2 , Humanos , Mitocôndrias/metabolismo , Especificidade de Órgãos , Oxirredução , Fosforilação Oxidativa/efeitos dos fármacos , Estresse Oxidativo , Proteína Desacopladora 2/agonistas , Proteína Desacopladora 2/metabolismo
12.
Aging Clin Exp Res ; 31(9): 1195-1205, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-30484255

RESUMO

The current study investigates the cooperative cardioprotective effect of calcitriol (active form of vitamin D) combined with resveratrol in a rat model of D-galactose (D.gal)-induced aging. Male Wistar rats received resveratrol (D.gal + Res), calcitriol (D.gal + Cal), or a combination of them (D.gal + Res + Cal). Intact animals served as control (Ctl). Blood pressure (BP) was recorded by cannulation of the left carotid artery. Fibrosis and cell size were assessed by Masson's trichrome and hematoxylin-eosin staining, respectively. Cardiac and serum level of antiaging protein, klotho, was measured by ELISA assay method. Gene expression was evaluated by real-time RT-PCR. Biochemical tests were performed according to the standardized method. In D.gal + Res + Cal group, BP, heart weight-to-body weight ratio, and cardiomyocytes size decreased significantly compared with D-gal group. The cardiac transcription levels of catalase and superoxide dismutase 1 and 2 were upregulated in D.gal + Res + Cal compared to the D.gal group (P < 0.001, P < 0.05, P < 0.05, respectively). Increased level of malondialdehyde was observed in D.gal group (P < 0.01 vs. Ctl) which was normalized partially in D.gal + Res + Cal group (P < 0.05). Catalase and superoxide dismutase activity also increased in D.gal + Res + Cal group (P < 0.01 vs. D.gal). Cardiac Klotho, as the antiaging protein, remained unchanged at mRNA and protein levels among the experimental groups. The serum level of Klotho did not change significantly in D.gal group; however, in D.gal + Res + Cal group, serum klotho concentration was increased (P < 0.05 vs. D.gal). It could be concluded that co-administration of resveratrol and vitamin D protects the heart against aging-induced damage by the modulation of hemodynamic parameters and antioxidant status of the heart. Furthermore, increased serum level of klotho could be a novel mechanism for antiaging effects of resveratrol and vitamin D.


Assuntos
Envelhecimento/efeitos dos fármacos , Antioxidantes/farmacologia , Galactose/metabolismo , Resveratrol/farmacologia , Vitamina D/análogos & derivados , Animais , Catalase/sangue , Glucuronidase/sangue , Proteínas Klotho , Masculino , Malondialdeído/sangue , Ratos , Ratos Wistar , Resveratrol/administração & dosagem , Superóxido Dismutase/sangue , Vitamina D/administração & dosagem , Vitamina D/farmacologia
13.
Perfusion ; 34(3): 225-230, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30394849

RESUMO

OBJECT: Mitral regurgitation (MR) is a condition in which the mitral valve does not prevent the reversal of blood flow from the left ventricle into the left atrium. This study aimed at numerically developing a model to mimic MR and poor leaflet coaptation and also comparing the performance of a normal mitral valve to that of the MR conditions at different gap junctions of 1, 3 and 5 mm between the anterior and posterior leaflets. RESULTS: The results revealed no blood flow to the left ventricle when a gap between the leaflets was 0 mm. However, MR increased this blood flow, with increases in the velocity and pressure within the atrium. However, the pressure within the aorta did not vary meaningfully (ranging from 22 kPa for a 'healthy' model to 25 kPa for severe MR). CONCLUSIONS: The findings from this study have implications not only for understanding the changes in pressure and velocity as a result of MR in the ventricle, atrium or aorta, but also for the development of a computational model suitable for clinical translation when diagnosing and determining treatment for MR.


Assuntos
Ventrículos do Coração/fisiopatologia , Insuficiência da Valva Mitral/fisiopatologia , Valva Mitral/fisiopatologia , Velocidade do Fluxo Sanguíneo , Pressão Sanguínea , Simulação por Computador , Ventrículos do Coração/patologia , Hemodinâmica , Humanos , Valva Mitral/patologia , Insuficiência da Valva Mitral/patologia , Modelos Cardiovasculares , Sístole
14.
Med J Islam Repub Iran ; 33: 150, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-32280656

RESUMO

Background: Rhinosinusitis is an inflammatory disease of the nasal and paranasal sinus mucosa, and it becomes chronic when it lasts longer than 3 months without symptom improvement. The aim of this study was to determine the effect of PRP on improvement of endoscopic sinus surgery. Methods: This was a randomized clinical trial (RCT) designed and implemented on 21 patients with chronic rhinosinusitis in Rasool Akram hospital in Tehran during 2016-2017. In this study, one side of the nose was randomly selected as the control and the other side as the case, and at the end of the surgery, PRP was sprayed onto the surface where the polyp was removed in the side that was intended as the case. The nasal endoscopy findings were graded according to Meltzer's criteria before and after surgery and CT findings were classified according to the Lund-Mackay scoring system. Then, all patients were followed for 6 months. The SNOT-22 questionnaire, charts of Meltzer's criteria, and Lund-Mackay were used for data collection. Kolmogorov-Smirnov test, Wilcoxon Signed Rank test, and Mann-Whitney U test were used to analyze data in SPSS-22 software. P value<0.05 was considered significant. Results: The mean and standard deviation of patients' age were 36.55 and 7.91, respectively. The median Lund-McKay Pre-op CT score before treatment was 10 (9.5-11), and no significant difference was found between the 2 sides of the nose (left and right). The items that showed statistically significant improvement after surgery was SNOT-22 (p<0.05). The mean of Meltzer scores in each side of the nose was significantly different before and after intervention (p<0.05). However, the mean of Meltzer scores in the 2 sides of the nose was not significantly different before and after intervention. Conclusion: The treatment by PRP may be effective in reducing symptoms of patients showing recurrence of CRS symptoms following endoscopic sinus surgery subjectively but not objectively.

15.
Med J Islam Repub Iran ; 33: 97, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31696091

RESUMO

Background: The metabolic syndrome is highly prevalent among patients with schizophrenia. This study was conducted to determine the prevalence of metabolic syndrome and the risk of cardiovascular disease in the next 10 years among schizophrenic patients. Methods: This cross sectional study was performed on 100 Iranian patients with schizophrenia in 2016. The prevalence of metabolic syndrome was determined by adult treatment panel III criteria, and 10-year cardiovascular risk was calculated by Framingham Risk Score. SPSS software was used to perform statistical analysis. Chi-square and Fisher's exact or extended Fisher's exact tests were used to compare dichotomous variables. Also, Mann-Whitney U test was applied to compare the quantitative variables. Significance level was considered to be less than or equal to 0.05. Results: In this study, 83 participants (83%) were male and 17 (17%) were female. The prevalence of metabolic syndrome was 27% (21.7% in males and 52.9% in females, p=0.015). Among all components of metabolic syndrome, low HDL-C in men and abdominal obesity in females were the most common disorders. Based on Framingham Risk Score, 76%, 16%, and 8% of patients had low, intermediate, and high level of risk, respectively. A significant difference was observed between the level of risk among participants with and without metabolic syndrome (p=0.042). Conclusion: In this study, patients with schizophrenia showed a high prevalence of metabolic syndrome, but most of them had low risk of developing cardiovascular disease. These results suggest regular screening and early interventions to modify the risk factors of metabolic syndrome.

16.
Phytother Res ; 31(5): 755-762, 2017 May.
Artigo em Inglês | MEDLINE | ID: mdl-28271568

RESUMO

This study was designed to assess the effects of Ziziphus jujube fruit (ZJF) infusion on lipid profiles, glycaemic control and antioxidant status in patients with type 2 diabetes mellitus (T2DM). In this randomized controlled clinical trial, 116 participants with T2DM (older than 30 years) were assigned to consume a balanced diet or diet plus ZJF infusion (10 g/100 mL boiling water) three times/day before main meals for 12 weeks. Diet was designed to be energy restricted (500 kcal/day deficit from estimated energy requirements), and macronutrient content was similar in both groups (55% carbohydrate, 15% protein and 30% fat). The consumption of ZJF infusion compared with the control group was associated with significant improvement in glycosylated haemoglobin (-0.68 ± 0.65 vs. -0.44 ± 0.55%; p = 0.03), total cholesterol (-24.29 ± 28.89 vs. -11.21 ± 29.98 mg/dL; p = 0.02), triglycerides (-43.3 ± 39.26 vs. -27.16 ± 46.84 mg/dL; p = 0.05), low-density lipoprotein cholesterol (-19.85 ± 27.62 vs. -6.55 ± 27.82 mg/dL; p = 0.01), low-density lipoprotein cholesterol/high-density lipoprotein cholesterol (-0.56 ± 0.80 vs. -0.2 ± 0.72; p = 0.01) and total cholesterol to high-density lipoprotein cholesterol ratios (-0.73 ± 0.94 vs. -0.35 ± 0.77; p = 0.02). ZJF had beneficial effects on glycosylated haemoglobin and lipid profile in T2DM patients. Further research is needed to identify the mechanism of ZJF action on glucose and lipid metabolism. Copyright © 2017 John Wiley & Sons, Ltd.


Assuntos
Antioxidantes , Diabetes Mellitus Tipo 2/dietoterapia , Frutas , Índice Glicêmico , Lipídeos/sangue , Ziziphus , Idoso , Glicemia/metabolismo , Feminino , Hemoglobinas Glicadas/metabolismo , Humanos , Masculino , Pessoa de Meia-Idade
17.
Nurs Crit Care ; 22(1): 19-28, 2017 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25349051

RESUMO

AIM: This study aimed to investigate the effects of a peer education on cardiac self-efficacy (CSE) and readmission of the patients undergoing bypass surgery. BACKGROUND: Self-efficacy is an antecedent vital factor in both initiating and maintaining healthy behaviours. It significantly improves after effects of heart attacks, anxiety and diminishes the possibility of readmission. DESIGN: This study is a randomized-controlled trial. METHOD: Sixty patients undergoing bypass surgery were chosen and assigned equally into the control and intervention groups. While routine education was presented to the patients in the control group, intervention group were taught using the peer education in two sessions. CSE of all the selected patients was assessed orderly in 5 days, 4 weeks and 8 months after surgery. Moreover, their readmission was investigated after 8 months from surgery. Data was collected using demographic and the CSE scale. Data were also analysed by using χ2 , Kolmogorov-Smirnov and repeated measures analysis of variance tests. RESULTS: The mean score of CSE in the intervention group was significantly different from the corresponding number in the control group in all three stages of data collecting (p < 0·001). Compared to the control group, a smaller number of the patients in the intervention group were readmitted to the hospitals after 8 months (p = 0·011). CONCLUSIONS: Implementation of peer education has positive effects on CSE in patients who have bypass surgery and reduces their hospital readmission. It can be beneficial to apply this method as an educative-supportive approach in cardiac surgery fields. RELEVANCE TO CLINICAL PRACTICE: Implementation of peer education has positive effects on CSE in these patients and reduces their hospital readmission.


Assuntos
Ponte de Artéria Coronária/psicologia , Educação de Pacientes como Assunto/métodos , Grupo Associado , Autoeficácia , Ansiedade/psicologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Readmissão do Paciente , Inquéritos e Questionários
18.
J Res Med Sci ; 21: 70, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27904615

RESUMO

BACKGROUND: Designing the effective and early interventions can prevent progression of prediabetes to diabetes. Few studies have shown the effect of flaxseed on glycemic control. This study aimed to assess the effect of flaxseed powder on insulin resistance (IR) indices and blood pressure in prediabetic individuals. MATERIALS AND METHODS: In a randomized clinical trial, 99 prediabetic individuals were randomly divided into three groups: two groups received 40 g (FG40) and 20 g (FG20) flaxseed powder daily for 12 weeks and the third group was the control (CG). Before and after the intervention, anthropometric measurements, blood pressure, fasting serum glucose (FSG), insulin, homeostasis model assessment IR index (HOMA-IR), beta-cell function, and insulin sensitivity were measured. RESULTS: FSG significantly declined overall in all groups compared to the baseline (P = 0.002 in CG and FG20 groups and P = 0.001 in FG40). In contrast, mean of the changes in FSG was not significantly different between groups. Insulin concentration did not change significantly within and between the investigated groups. Although HOMA-IR reduced in FG20 (P = 0.033), the mean of changes was not significant between the three groups. Mean of beta-cell function increased in CG and FG40 groups compared to the baseline (P = 0.044 and P = 0.018, respectively), but mean of its changes did not show any difference between the three groups. The mean of changes in IR indices was not significant between the three groups. FG40 group had significantly lowered systolic blood pressure after the intervention (P = 0.005). CONCLUSION: Daily intake of flaxseed powder lowered blood pressure in prediabetes but did not improve glycemic and IR indices.

19.
BMC Med Ethics ; 16: 61, 2015 Sep 09.
Artigo em Inglês | MEDLINE | ID: mdl-26354119

RESUMO

BACKGROUND: Professional ethics refers to the use of logical and consistent communication, knowledge, clinical skills, emotions and values in nursing practice. This study aimed to explore and describe factors that affect professional ethics in nursing practice in Iran. METHODS: This qualitative study was conducted using conventional content analysis approach. Thirty nurses with at least 5 years of experience participated in the study; they were selected using purposive sampling. Data were collected through semi-structured interviews and analyzed using thematic analysis. RESULTS: After encoding and classifying the data, five major categories were identified: individual character and responsibility, communication challenges, organizational preconditions, support systems, educational and cultural development. CONCLUSIONS: Awareness of professional ethics and its contributing factors could help nurses and healthcare professionals provide better services for patients. At the same time, such understanding would be valuable for educational administrators for effective planning and management.


Assuntos
Atitude do Pessoal de Saúde , Competência Clínica , Ética em Enfermagem , Enfermeiras e Enfermeiros , Recursos Humanos de Enfermagem Hospitalar/ética , Adulto , Caráter , Comunicação , Características Culturais , Escolaridade , Feminino , Humanos , Entrevistas como Assunto , Irã (Geográfico) , Masculino , Pessoa de Meia-Idade , Enfermeiras e Enfermeiros/psicologia , Enfermeiras e Enfermeiros/normas , Recursos Humanos de Enfermagem Hospitalar/psicologia , Recursos Humanos de Enfermagem Hospitalar/normas , Cultura Organizacional , Pesquisa Qualitativa , Estudos de Amostragem , Responsabilidade Social , Apoio Social
20.
Int J Nurs Stud Adv ; 6: 100191, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38746803

RESUMO

Background: Clinical judgment is one of the most important competencies required for safe care, decision-making, and diagnosis in nursing profession. Therefore, it is necessary to examine clinical judgment in nursing care. Existing a standard questionnaire based on cultural and social conditions can accurately evaluate clinical judgment in nurses. Objective: The present study aimed to develop and validate clinical judgment capability questionnaire in nurses. Design: The current research was a sequential exploratory mixed method study. Setting: The teaching hospitals affiliated to Jahrom University of Medical Sciences in the South of Iran in 2023. Participants: Twelve clinical nurses were included in the qualitative part and 181 nurses in the quantitative part. Methods: The study was conducted in two parts: one qualitative and one quantitative. In the qualitative part, the concept of clinical judgment was explored using qualitative content analysis. Then, the initial pool of items was generated to develop a questionnaire. In the quantitative part, psychometric properties of the questionnaire were evaluated including face, content, and structure validity and reliability (internal consistency and stability). Results: After examining the psychometric properties, 22 items were developed for the final questionnaire. The results of factor analysis led to the extraction of four factors, including noticing, interpreting, responding, and reflecting. The internal consistency of the questionnaire was confirmed with a Cronbach's alpha coefficient of 0.95 and its stability with an intraclass correlation coefficient of 0.84. Conclusion: The developed 22-item questionnaire is a valid and reliable tool for assessment of clinical judgment capability in nurses.

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